Macromoths of Northwest Forests and Woodlands

Sericosema juturnaria [Geometridae]

Wingspan 3.5 cm. Forewing is pale tan with a curved black postmedian line
and a variable black submarginal border. This geometrid is abundant and widely
distributed in dry woodlands in western North America. Moths fly in midsummer.
Caterpillars feed only on the foliage of species of Ceanothus.